[Custom Feature Question] shiney570's Item Receive Scene

Hello, there
How can I use shiney570's Item Receive Scene for Receiving a Pokedex?
I tried making an Item called as Pokedex as Key Item and as soon as the player receives the Pokedex ,I deleted that item using the Script.
But the problem is, it still shows "Put the Pokedex in Key Items Pocket'
How can I disable this?

Try using this:

It will add the item without displaying any message.

Thanks